
    <nz-tree
      [nzData]="nodes"
      nzDraggable="true"
      (nzOnDragStart)="nzEvent($event)"
      (nzOnDragEnter)="nzEvent($event)"
      (nzOnDragLeave)="nzEvent($event)"
      (nzOnDrop)="nzEvent($event)"
      (nzOnDragEnd)="nzEvent($event)">
    </nz-tree>
  